Multi-layer gear assembly

Abstract

The utility model provides a multi-layer gear assembly, and belongs to the technical field of gears. The problems that an existing gear needs to be replaced integrally, and the replacement cost is high are solved. The multi-layer gear assembly comprises a gear body, a through hole coaxial with the gear body is formed in the end face of the gear body, an assembling column connected with the gear body and coaxial with the gear body is arranged at the position, located at the through hole, of the gear body, and a multi-tooth unit which is connected with the assembling column, forms a multi-layer gear structure and can be replaced is arranged on the assembling column. The utility model has the advantage of low replacement cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of gears and relates to a multi-layer gear component. Background Art

[0002] A gear is a mechanical component with teeth on the rim that can continuously mesh to transmit motion and power. Therefore, gears are relatively widely used. However, gears are generally formed in one piece, which makes them unable to adapt to various needs. At the same time, if they are damaged, they need to be replaced as a whole, and the replacement cost is relatively high, which does not meet the use needs. Summary of the invention

[0003] The purpose of the utility model is to provide a gear assembly which can form a multi-layer structure and is easy to replace in view of the above problems existing in the prior art.

[0004] The purpose of the utility model can be achieved through the following technical solutions: a multi-layer gear assembly, including a gear body, characterized in that a through hole coaxially arranged with the gear body is opened on the end face of the gear body, and an assembly column connected to and coaxially arranged with the gear body is arranged at the through hole, and a multi-tooth unit connected to the assembly column and forming a multi-layer gear structure and capable of being replaced is arranged on the assembly column.

[0005] In the above-mentioned multi-layer gear assembly, a through hole coaxially arranged therewith is also provided on one end face of the assembly column, and a notch groove arranged along its length direction is provided on the outer peripheral wall of the assembly column. The assembly column forms a multi-step stepped structure matching the multi-tooth unit through the notch groove.

[0006] In the above-mentioned multi-layer gear assembly, the multi-tooth unit is composed of a plurality of auxiliary gears, each of which is composed of an inner ring and an outer ring with external teeth. The inner end wall of the outer ring is provided with a plurality of protrusions arranged along its circumferential direction and protruding axially outward. The outer ring is provided with a dovetail block portion connected to the protrusion at the location where the protrusion is located, and the height of the dovetail block portion is smaller than the height of the protrusion. The inner ring is provided with an assembly groove for the protrusion to be embedded and installed at the location corresponding to the protrusion, and a dovetail groove is provided on the wall surface of the inner ring at the assembly groove, which is connected to the assembly groove and for the dovetail block portion to be embedded and installed.

[0007] Compared with the prior art, the multi-layer gear assembly has the following advantages:

[0008] 1. A through hole coaxially arranged therewith is provided on the end face of the gear body, and an assembly column connected to and coaxially arranged therewith is provided at the through hole of the gear body, and a multi-tooth unit connected therewith and forming a multi-layer gear structure and capable of replacement is provided on the assembly column, and the arrangement of the above structure facilitates its replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the main structure of the multi-layer gear assembly.

[0010] In the figure, 1, gear body; 2, assembly column; 3, auxiliary gear; 4, inner ring; 5, outer ring; 6, raised part; 7, dovetail block part. DETAILED DESCRIPTION

[0011] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0012] like Figure 1 As shown, the multi-layer gear assembly includes a gear body 1, a through hole coaxially arranged therewith is provided on the end face of the gear body 1, an assembly column 2 connected to and coaxially arranged therewith is provided at the through hole of the gear body 1, a multi-tooth unit connected to and forming a multi-layer gear structure and capable of being replaced is provided on the assembly column 2, a through hole coaxially arranged therewith is also provided on one end face of the assembly column 2, a notch groove arranged along its length direction is provided on the outer peripheral wall of the assembly column 2, the assembly column 2 forms a multi-stage stepped structure matched with the multi-tooth unit through the notch groove, of course, the assembly column 2 can also be composed of a plurality of coaxially arranged splicing blocks with outer diameters decreasing from left to right, the above-mentioned assembly column 2 can be provided with a spline structure in the through hole, the assembly column 2 can also be connected to the gear body 1 by a thread, and when it is threadedly connected, it is necessary to set a pin The multi-tooth unit is composed of a plurality of auxiliary gears 3, each of which is composed of an inner ring 4 and an outer ring 5 with external teeth. The inner end wall of the outer ring 5 is provided with a plurality of protrusions 6 which are arranged along its circumferential direction and protrude axially outward. The outer ring 5 is provided with a dovetail block 7 connected to the protrusion 6 at the location of the protrusion 6. The height of the dovetail block 7 is less than the height of the protrusion 6. The inner ring 4 is provided with an assembly groove for the protrusion 6 to be embedded and installed at the location corresponding to the protrusion 6. The wall surface of the inner ring 4 at the location of the assembly groove is provided with a dovetail groove which is connected to the assembly groove and for the dovetail block 7 to be embedded and installed, so that the outer ring 5 is connected to the inner ring 4 through a riveting structure. The inner ring 4 and the assembly column 2 can be connected by threads, welding or a pin.

[0013] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0014] Although the present invention uses the terms such as gear body 1, assembly column 2, auxiliary gear 3, inner ring 4, outer ring 5, protrusion 6, dovetail block 7, etc. more frequently, it does not exclude the possibility of using other terms. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims

1. A multi-layer gear assembly, comprising a gear body (1), characterized in that: A through hole coaxially arranged therewith is provided on the end surface of the gear body (1); an assembly column (2) connected to and coaxially arranged therewith is provided on the gear body (1) at the through hole; and a multi-tooth unit connected therewith and forming a multi-layer gear structure and capable of being replaced is provided on the assembly column (2).

2. A multi-layer gear assembly according to claim 1, characterized in that: A through hole coaxially arranged therewith is also provided on one end surface of the assembly column (2), and a notch groove arranged along its length direction is provided on the outer peripheral wall of the assembly column (2). The assembly column (2) forms a multi-step ladder structure matching the multi-tooth unit through the notch groove.

3. A multi-layer gear assembly according to claim 1, characterized in that: The multi-tooth unit is composed of a plurality of auxiliary gears (3), each of which is composed of an inner ring (4) and an outer ring (5) with external teeth. The inner end wall of the outer ring (5) is provided with a plurality of protrusions (6) arranged along its circumferential direction and protruding axially outward. The outer ring (5) is provided with a dovetail block portion (7) connected to the protrusion (6) at the location where the protrusion (6) is located, and the height of the dovetail block portion (7) is less than the height of the protrusion (6). The inner ring (4) is provided with an assembly groove for the protrusion (6) to be embedded and installed at the location corresponding to the protrusion (6), and the wall surface of the inner ring (4) at the location where the assembly groove is provided with a dovetail groove connected to the assembly groove and for the dovetail block portion (7) to be embedded and installed.

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